Mérida climate

Name: Mérida
Address: MX

Mérida is warmest in May, with average highs of 36 °C, and coldest in January, when nights average 19 °C. September is the wettest month (132 mm) and March the driest (14 mm). Figures are 1991–2020 climate normals.

Across a full year Mérida averages 704 mm of rain and 354 days above 25 °C.

Mexico · population 1,201,000 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month May 36 °C
Coldest month January 19 °C
Driest month March 14 mm
Wettest month September 132 mm
Least cloud March 33 % cloud
Hottest on record May 42 °C
Coldest on record January 11 °C

What to expectMérida through the year

Mérida has a clear annual cycle: average daily highs run from 29 °C in January to 36 °C in May, a swing of 5.8 °C in mean temperature across the year.

Counted across a normal year, 354 days a year reach 25 °C, 277 of them reach 30 °C. The warmest reading in the 1991–2020 record is 42 °C, in May.

Rain is strongly seasonal. September averages 132 mm against 14 mm in March — 9.5 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	28.6 °C	20 mm	43 %
February	30.5 °C	16 mm	35 %
March	32.9 °C	14 mm	33 %
April	35.2 °C	23 mm	35 %
May	35.6 °C	52 mm	43 %
June	33.9 °C	128 mm	60 %
July	34.2 °C	80 mm	54 %
August	34.1 °C	94 mm	55 %
September	32.9 °C	132 mm	61 %
October	30.9 °C	91 mm	55 %
November	29.5 °C	33 mm	45 %
December	28.9 °C	23 mm	42 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.6 °C	19.2 °C	23.2 °C	35.3 °C	11.0 °C	27	12
February	30.5 °C	19.9 °C	24.4 °C	37.3 °C	12.3 °C	26	18
March	32.9 °C	21.0 °C	26.0 °C	39.8 °C	11.9 °C	30	25
April	35.2 °C	22.9 °C	28.1 °C	41.7 °C	15.0 °C	30	28
May	35.6 °C	24.3 °C	29.0 °C	42.4 °C	17.2 °C	31	30
June	33.9 °C	24.6 °C	28.3 °C	39.9 °C	21.1 °C	30	29
July	34.2 °C	24.2 °C	28.3 °C	38.5 °C	21.8 °C	31	31
August	34.1 °C	24.3 °C	28.3 °C	37.9 °C	22.3 °C	31	31
September	32.9 °C	24.1 °C	27.5 °C	38.6 °C	20.5 °C	30	28
October	30.9 °C	22.9 °C	26.2 °C	36.6 °C	15.8 °C	31	21
November	29.5 °C	21.0 °C	24.6 °C	35.5 °C	13.6 °C	29	13
December	28.9 °C	19.8 °C	23.6 °C	34.5 °C	12.4 °C	28	12

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	20 mm	4	11 h/day	43 %	70 %	15 km/h
February	16 mm	3	11 h/day	35 %	67 %	16 km/h
March	14 mm	3	12 h/day	33 %	61 %	18 km/h
April	23 mm	4	13 h/day	35 %	60 %	18 km/h
May	52 mm	8	13 h/day	43 %	62 %	17 km/h
June	128 mm	17	13 h/day	60 %	73 %	15 km/h
July	80 mm	15	13 h/day	54 %	73 %	14 km/h
August	94 mm	17	13 h/day	55 %	75 %	14 km/h
September	132 mm	19	12 h/day	61 %	80 %	13 km/h
October	91 mm	13	12 h/day	55 %	79 %	14 km/h
November	33 mm	6	11 h/day	45 %	74 %	15 km/h
December	23 mm	4	11 h/day	42 %	73 %	15 km/h

How Mérida compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Mérida	36 °C	19 °C	704 mm	354
Campeche · Mexico	35 °C	21 °C	844 mm	355
Cancún · Mexico	30 °C	22 °C	1,217 mm	332
Chetumal · Mexico	31 °C	21 °C	1,240 mm	354
Ciudad del Carmen · Mexico	33 °C	21 °C	1,289 mm	346
Belmopan · Belize	32 °C	20 °C	1,285 mm	343
Villahermosa · Mexico	35 °C	20 °C	1,640 mm	343

Where Mérida ranks

Ranking	Position	Value
The warmest places in North America in April	3rdof 50	35 °C
The warmest places in North America in May	3rdof 50	36 °C
The warmest places in North America in March	4thof 50	33 °C
The warmest places in North America year-round	5thof 50	32 °C
The warmest places in North America in February	13thof 50	31 °C
The warmest places in North America in October	15thof 50	31 °C

Planning a trip? See the best time to visit Mérida.

QuestionsCommon questions about Mérida’s climate

When is the best time to visit Mérida?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, May is the warmest month and March the driest. The month-by-month table above has the full picture.

How hot does Mérida get?

In May, the warmest month, daily highs average 36 °C. About 277 days a year pass 30 °C. The highest value in the 1991–2020 record is 42 °C.

How cold does it get in winter?

Nights average 19 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Mérida?

September, averaging 132 mm over 19 days with rain. The driest month is March with 14 mm. The year as a whole averages 704 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Mérida rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.